﻿package com.xbniao.owms.utils;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ResponseUtil {

	
	/**
	 * 发送xml。使用UTF-8编码。
	 * 
	 * @param response
	 *            HttpServletResponse
	 * @param text
	 *            发送的字符串
	 */
	public static void renderXml(HttpServletResponse response, String text) {
		render(response, "text/xml;charset=UTF-8", text);
	}
	/**
	 * 发送文本。使用UTF-8编码。
	 * 
	 * @param response
	 *            HttpServletResponse
	 * @param text
	 *            发送的字符串
	 */
	public static void renderText(HttpServletResponse response, String text) {
		render(response, "text/plain;charset=UTF-8", text);
	}
	/**
	  * 发送html。使用UTF-8编码。
	  * @param response
	  * 			HttpServletResponse
	  * @param text 
	  * 			发送的字符串
	  */
	public static void renderHtml(HttpServletResponse response,String text) {
		render(response, "text/html;charset=UTF-8", text);
	}

	/**
	 * 发送内容。使用UTF-8编码。
	 * 
	 * @param response
	 * @param contentType
	 * @param text
	 */
	public static void render(HttpServletResponse response, String contentType,
			String text) {
		response.setContentType(contentType);
		response.setHeader("Pragma", "No-cache");
		response.setHeader("Cache-Control", "no-cache");
		response.setDateHeader("Expires", 0);
		try {
			response.getWriter().write(text);
			response.getWriter().flush();
			response.getWriter().close();
		} catch (IOException e) {
			LOG.error(e.getMessage(), e);
		}
	}
	
	private static final Logger LOG = LoggerFactory.getLogger(ResponseUtil.class);

}
